Multi-Component Breath Alcohol Intervention

Each subject must: 1. Be between the ages of 18-25 2. Be able to read English and complete study evaluations 3. Report at least four days with heavy episodic drinking (i.e., 4 or more drinks for women and 5 or more drinks for men) out of the prior 30 days 4. Report having consumed at least one alcoholic drink during a minimum of 12 days out of the prior 30 so that subjects will have multiple opportunities to use the moderate drinking technologies during the intervention period. 5. Meet, at minimum, DSM-5 criteria for a mild alcohol use disorder (i.e., meet at least 2 diagnostic criteria) 6. Self-report interest in using a smartphone app to help reduce drinking with a score of at least 3 on a 0-10 scale indicating at least a degree of openness to using technology to moderate drinking. Exclusion Criteria No subject may: 1. Have been in inpatient or intensive outpatient treatment within the past 12 months 2. Have used a smartphone application to facilitate moderate drinking more than 1 time within the past 12 months 3. Meet DSM-5 criteria for current substance use disorder with the exception of tobacco use disorder, mild or moderate alcohol use disorder or mild cannabis use disorder. 4. History of alcohol withdrawal or medically-assisted detoxification as individuals with this history will likely be in need of more intensive treatment than is offered in this study. 5. Be psychotic or otherwise severely psychiatrically disabled 6. Report a history of a medical condition that would contraindicate the consumption of alcohol (e.g., liver disease, cardiac abnormality, pancreatitis, diabetes, neurological problems, and gastrointestinal disorders)